Ok so, Japan has an estimated Population of 126,2m and ratio of 95.55 males per 100 females in which means 48.5% of the Population is male
12.1% are ages 0-14 and 28.4% are over 65 so 126,2m - (12.1 + 28.4)% = 51,1m take that away from 126,6 = 71.1m
so now in one of the chapters it said around 22m males had died 71.1m - 48.5% = 34.4m - 22m = 12.4m males left roughly
so whence this figure came out
the ratio has now gone down to nearly 1 male to 3.4 females, let say this ratio is the consenting age and stuff, then u have lots of other factors LGBT stuff
with all this how can japan go on funtioning, schooling + higher education would be fucked up, plus every major work force would be decimated i just cant believe that no nucluar reactors haven't blow up yet shocking (we saw a helicoptor crash) but theres going to be a hell of a lot off deaths on the Transportation system (M/F). there would be Anarchy not blame the people who havent had sex, something seems off here
Basicly every virgin male over 18y old now is dead so save them that are almost 18 and younger
Simple solution, once over 16 a M/F can be register as a couple, with the premise of getting married later on,
Benefits include College/Uni Scolorships and once together for 5years Goverment could give a House/Property (in the males name)
or || Go completely off the rails and just as the MC is about to get Laid the Virus hits female and she DIES Horribly ||